Python 鏈結MySQL資料庫

參考資料：

這裡使用的是庫是pymysql

python鏈結資料庫時，mysql中要有要連線的資料庫，否則會無法連線。

import pymysql

#import movie 
host =
'localhost'
#主機名
user =
'root'
#使用者名稱
password =
''#密碼
database =
'douban2'
#資料庫名
#建表def
create_table()
:    db=pymysql.connect(host,user,password,database)
cursor=db.cursor(
)    cursor.execute(
"drop table if exists contents"
)    sql=
"""         create table contents(
movie_id char(60) not null,
movie_title char(200),
movie_director char(200),
movie_screenwriter char(200),
movie_character varchar(1000),
movie_type char(200),
movie_country char(200)
) """
cursor.execute(sql)
db.commit(
)    db.close(
)#建表
defcreate_table_comment()
:    db=pymysql.connect(host,user,password,database)
cursor=db.cursor(
)    cursor.execute(
"drop table if exists comment"
)    sql=
"""         create table comment(
movie_id char(60) not null,
movie_comment text
) """
cursor.execute(sql)
db.commit(
)    db.close(
)#插入資料
definsert_database(id
,title,director,screenwriter,mcharacter,mtype,country)
:    db=pymysql.connect(host,user,password,database)
cursor=db.cursor(
)    sql=
' insert into contents values("%s","%s","%s","%s","%s","%s","%s")'\
%(id
,title,director,screenwriter,mcharacter,mtype,country)
try:
cursor.execute(sql)
db.commit(
)except
:        db.rollback(
)    db.close(
)#插入資料
definsert_comment(id
,comment)
:    db=pymysql.connect(host,user,password,database)
cursor=db.cursor(
)    sql=
' insert into comment values("%s","%s")'\
%(id
,comment)
try:
cursor.execute(sql)
db.commit(
)except
:        db.rollback(
)    db.close(
)#查詢資料
defselect_database(id
):db = pymysql.connect(host, user, password, database)
cursor = db.cursor(
)    sql=
'select movie_id from contents ' \
'where movie_id="%s"'%id
try:
cursor.execute(sql)
results=cursor.fetchall(
)for row in results:
m_id=row[0]
print((
"movie_id=%s"
)%m_id +
'ok!'
+'\n'
)except
:print
("error:unable to fetch"+id
)    db.close(
)

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